Have you tried giving other data source to your report,just try below code and we will make changes as per you requirement
ReportDocument cryRpt= new ReportDocument();
cryRpt.Load("c:\\CrystalReport.rpt");
DataTable dt=new DataTable();//Fiil with some data- Or try binding blank data
cryRpt.Database.Tables[0].SetDataSource(dt);
crystalReportViewer1.ReportSource = cryRpt;